mercoledì 12 novembre 2008

Acute left MCA stroke with thrombus seen on CT-angiogram

Non-contrast head CT shows a left MCA stroke with a hyper dense linear structure in the left MCA. Angiogram confirms suspicion of thrombus in the left MCA.

Diagnosis: Acute left MCA stroke with thrombus seen on CT-angiogram

Key points

On MRI: Diffusion restriction with correlation on ADC map is diagnostic.Seen as a hypo attenuating lesion on non-contrast Head CT.Head CT can have false negative for acute stroke.The hyperdense MCA sign implies acute thrombus and is a poor prognostic indicator.